title: A novel development of dithizone as a dual-analyte colorimetric chemosensor: detection and determination of cyanide and cobalt (II) ions in dimethyl sulfoxide/water media with biological applications.
abstract: The behavior of dithizone (DTZ), an easily available dye has been studied for the first time in chromogenic sensing of CN(-) as an anionic species and for Co(2+) as a cationic species in DMSO/H2O media. So employing DTZ an efficient colorimetric chemosensor was afforded with a chromogenic selectivity for Co(2+) over other cations with detection limit of 0.04 μmol L(-1). The complex of Co(2+) with DTZ also displayed ability to detect up to 0.43 μmol L(-1) CN(-) (K(+) salts) among other competing anions through a fast response time of less than 30s which is much lower than most recently reported chromogenic probes. The linear dynamic ranges for the determination of Co(2+) and CN(-) were 0.3-4.4 and 3.3-58.6 μmol L(-1) respectively. This method could have potential application in a variety of cases requiring rapid and accurate analysis of Co(2+) and CN(-) for human serum and water samples.
authors.affiliation: Department of Chemistry, Payame Noor University, Shiraz, Islamic Republic of Iran. Tavallali@pnu.ac.ir
authors.forename: Hossein
authors.initials: H
authors.lastname: Tavallali
authors.forename: Gohar
authors.initials: G
authors.lastname: Deilamy-Rad
authors.forename: Abolfath
authors.initials: A
authors.lastname: Parhami
authors.forename: Seyede Zahra
authors.initials: SZ
authors.lastname: Mousavi
mesh_terms: D003035:Cobalt / Q000032:analysis* / Q000737:chemistry; D003124:Colorimetry; D004396:Coloring Agents / Q000737:chemistry*; D003486:Cyanides / Q000032:analysis* / Q000737:chemistry; D004121:Dimethyl Sulfoxide / Q000032:analysis; D004230:Dithizone / Q000737:chemistry*; D060766:Drinking Water / Q000032:analysis; D004784:Environmental Monitoring; D006801:Humans; D007492:Iran; D011891:Rain / Q000737:chemistry; D045483:Rivers / Q000737:chemistry; D044967:Serum / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D003486:Cyanides; D060766:Drinking Water; D014874:Water Pollutants, Chemical; D003035:Cobalt; D004230:Dithizone; D004121:Dimethyl Sulfoxide
keywords: Cobalt (II); Colorimetric chemosensor; Cyanide; Dithizone; Naked-eye detection